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Finding the Fourth Proportional to 577,969.16, 866,738.68 and 198,783.45

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Solution

The fourth proportional to 577,969.16, 866,738.68 and 198,783.45 is: 298,101.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,969.16 : 866,738.68 = 198,783.45 : x
  2. Step 2: Convert to fraction form
    577,969.16/866,738.68 = 198,783.45/x
  3. Step 3: Cross multiply
    577,969.16x = 866,738.68 × 198,783.45
  4. Step 4: Simplify right side
    577,969.16x = 172,293,304,561.89
  5. Step 5: Solve for x
    x = 172,293,304,561.89/577,969.16
  6. Step 6: Final answer
    x = 298,101.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.